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A161021

Collatz (or 3x+1) trajectory starting at 703.

703, 2110, 1055, 3166, 1583, 4750, 2375, 7126, 3563, 10690, 5345, 16036, 8018, 4009, 12028, 6014, 3007, 9022, 4511, 13534, 6767, 20302, 10151, 30454, 15227, 45682, 22841, 68524, 34262, 17131, 51394, 25697, 77092, 38546, 19273, 57820, 28910

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OFFSET

0,1

COMMENTS

703 = A060412(5); a(A006577(703)) = a(170) = 1;

a(n) = A008884(n-59) for n with 162 <= n <= 170;

a(n) = A161022(n+53) for n with 155 <= n <= 170;

a(n) = A161023(n+153) for n with 144 <= n <= 170.

LINKS

R. Zumkeller, Table of n, a(n) for n = 0..170

Index entries for sequences related to 3x+1 (or Collatz) problem

Index entries for linear recurrences with constant coefficients, signature (0,0,1).

MATHEMATICA

NestList[If[EvenQ[#], #/2, 3#+1]&, 703, 40] (* Harvey P. Dale, Nov 27 2011 *)

CROSSREFS

Sequence in context: A045146 A083735 A375918 * A283521 A334010 A257721

Adjacent sequences: A161018 A161019 A161020 * A161022 A161023 A161024

KEYWORD

nonn,easy

AUTHOR

Reinhard Zumkeller, Jun 03 2009

EXTENSIONS

Edited by N. J. A. Sloane, Jul 27 2019

STATUS

approved

URL: https://oeis.org/A161021

⇱ A161021 - OEIS